Cylinder-roller film-steadier for moving-picture machines.



J. L. HAMMOND. CYLINDER ROLLER FILM STEADIEB. FOR MOVING PIOTUBEMACHINES.

APPLICATION FILED JULY 14, 1908.

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UNITED stra ns PATENT (names.

JOHN L. HAMMOND, OF MACON, MISSOURI, ASSIGNOR OF ONE-HALF TO JOHN W.PATTON, OF MACON, MISSOURI.

CYLINDER-ROLLER FILM-STEADIER FOR MOVING-PICTURE MACHINES.

Specification of Letters Patent.

Patented April 6, 1909.

Application filed July 14, 1908. Serial No. 443,494.

for Moving-Picture Machines; and I declare the following to be a full,clear, and exact description of the same, such as will enable othersskilled in the art to which it appertains to make and use the invention,reference being had to the accompanying drawings, and to letters ofreference marked thereon, which form a part of thisspecification.

Figure 1 is an end view of the invention as applied. Fig. 2 is aperspective view of the invention showing the seat for holding theroller against the film. Fig. 3 is a section on the line 33,Fig. 4.Fig.4 is asection on the line 4,4, Fig. 3.

The invention relates to means for steadying the films of moving picturemachines, having for its object to prevent the objectionable "umping orquivering of the picture, whiclris eld absolutely still, extending thelife of a film more than double, and extending the life of the machine,the invention being capable of attachment to any movingpicture machineat small cost.

Other objects and advantages will hereinafter a pear.

In t eaccompanying drawings, illustrating the invention, the letter'c,designates the film, having the usual marginal perforations; a, and b,the feed sprocket wheels of the ma chine enga ing such perforations.

c is the ilm steadyingdevice comprising a hollow cylinder carrier 0,having a standard support (1, at one end thereof, said support beingsecured at its lower end in suitable suportlng bearings shown at d. ispivotally mounted upon a reduced upper portion f of the standard (1,restin upon the shoulder f at the base of such rer uced portion, a setnut 9, having bearin against a short coil spring g", fitting aroun theupper end portion of the, part f and bearing at its lower end upon thecarrier 0', serving when the spring is ut under ,tension by the setscrew to choc the free movement of the carrier upon the standard or toact in the nature of a brake u )011 such movement.

h, is a friction ro er of soft rubber or other suitable material, saidroller having ateach The carrier 0,

side thereof metal journal extensions h, h, 5t

provided with. bearings in journal blocks ipl, mounted in verticalbarrels 'i, '11, secured within the carrier at the end portions thereof.Each barrel i, is vertically slottedat j, to allow movement of theextension h therein, a coil spring 7', fitting in the barrel and bearingat its lower end upon. the journal block, which bears at its lower endupon the solid bottom 7c, of the barrel having a threaded opening 1:,for engagement with the securing screw 1. The coil s iring and journalblock are sli ped in from tlieopenupper end ortion o' the v barrel, anupper bearing piece lying above the spring and having areduced portionl, engaging within the coils thereof. The upper securing screw m, hasengagement with a depression m of the bearin iece whereby all the partsare securely l18l( in position. The friction roller projects partlywithout the cylinder carrier throu h a central slot n, of its lowerwall, such ro lei: being held in projected position by the action of thecoil springs j, j, and inward movement of the friction roller, whilebeing allowed, is resisted by the action of such springs, whereby theroller is held under spring tension.

In the application of the invention, the

passes, and against which it is pressed by the rubber roller.

The cylinder carrier is allowed a slight upward movement at its free endowing to the coil spring g, against which the set screw g, has bearinand as the carrier is turned to- -ward the ii in, this slight liftallowed enables the carrier to engage at its free end in stationary seat1), of the machine, whereby the carrier and its friction roller aresecurely held in position with the film compressed by the rubber rolleragainst; the lower roller 0, tea slight extent, which is sufficient torevent any unnecessary movement of the 1 m and does not in any wayprevent its free passage or'i'eed through such rollers nor injure thefilm or negative in any way.

The use of the invention causes a steady pull on the film 111 onedirection and Will 1'8- suit in a perfect picture upon the curtain or Iture machines, a guide roller, a swinging 590 scr en until the ma lnalholes of the film r roller carrier, and e friction roller in the carwearabsolutely toge tier. rier and capable of being swung therewith Inasmuchas the film is prevented from toward and away fro] n the guide roller.

a playing backward and forward on the feed 3. In a roller film steadierfor IIIOVHI? picsprocket wheels that engage with the nmrturenmchines,itcarrier-havingapivota supgmal perforations the life of these Wheels,port at one end thereof, and a spring-pressed w 'ch are made of softbrass and are some- '1' what expensive, is largely extended. l ed tocooperate with the guide roller of the t.) Hnving thus described theinvention, whet machine to steady the film and capable of I claim as newand desire to secure by Letters swinging with the carrier upon thepivotal 30 etent is: support as a center toward or away from the 1. In aroller film steedier for moving )ic-L film. ture machines, an uprightstandard, a 1'0 ler In testimony. whereof I affix my signature,

: 3 carrier pivoted at one end to thestandard to H1 presence 01 twowitnesses.

swing laterall with reference thereto afric- JOHN L: HAMMOND. tionroller in t e carrier and 1; guide roller be- Witnesses: low thefriction roller. GEORGE W. JAEGER,

2. In a roller film steadier for moving pic-'- PEARL H. HALL.

